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Check the pressure switch of the Indesit washing machine

Check the pressure switch of the Indesit washing machineIn case of failure of the level sensor, the Indesit automatic machine may simply freeze during the washing process and refuse to continue functioning. In order to cope with the problem on your own, you need to understand how the element is structured, what value it has. So, we will figure out how to check the pressure switch in the washing machine with your own hands, adjust it and fix it.

Why is it needed and how is it arranged?

The level switch is one of the main parts of the washer, without which the device simply could not function. The operation of the machine is regulated by a control module, to which the pressure switch sends signals that there is enough water in the tank, you can stop its intake and close the inlet valve. It is thanks to the level sensor that the main unit detects that the tank is filled with enough fluid. Let's talk more about the principle of operation of the pressostat.

How does the pressure switch workThe liquid level switch controls the volume of water poured into the tank. Any of the washing programs involves a set of different amounts of liquid. The pressure switch is a rounded part that has a plastic case. A pressure hose and electrical wiring are connected to the sensor. Inside the element there is a switch and a thin membrane.

Air passing under high pressure through the hose is transferred to the membrane surface; it, changing its shape, closes the switch. Further, through the connected wires, a signal about the need to stop the intake of water is transmitted to the control module. This is how the liquid level sensor in the tank works.

It is worth mentioning where the pressure switch is located in the Indesit machine. It is located under the top cover, near the side wall of the unit.

Symptoms of a level sensor breakdown

How can the user guess that the cause of the malfunction of the washing machine lies precisely in the breakdown of the liquid level switch? Most Indesit automatic machines are equipped with a self-diagnosis system for problems that arise. If a pressure switch is broken, the washer will immediately transmit information about the error code to the display. Using the manual for using the AGR, decrypting the code is not difficult.

If the machine does not display a fault code, a signal about problems with the pressure switch will be the lack of water in the drum after starting the wash. At the same time, it can be observed that the washing machine still includes a heating element. Another sign of a level sensor breakdown is uncontrolled, continuous intake of water into the tank. And finally, poorly wrung laundry indicates that the relay fails, the water cannot completely escape through the drain hose and things remain wet.

However, these signs can also indicate a breakdown of other elements of the AGR, for example, the main control module or inlet valve. Maybe the machine is simply incorrectly connected to utilities. To be sure that the matter is really in the pressure switch, it is important to understand how to check the level sensor in the device.

Search and check the level sensor

Location of the pressostat in the machine bodyTo carry out a check of the pressure switch, you do not need to have special knowledge. Even a beginner will cope with this task. The sequence of actions will be as follows:

  • disconnect the washing machine;
  • close the valve responsible for supplying water to the tank;
  • remove the upper case cover by unscrewing the screws holding it;
  • Find the fluid level switch;
  • prepare a tube the size similar to the diameter of the nozzle;
  • disconnect the pressure hose, insert the prepared tube into it and blow it slightly.

In the case when the pressure switch is working, you should hear one or three soft clicks.

Then examine the part for damage. Inspect the hose for obstruction, if necessary, clean it with a jet of water from the tap.

disconnect the pressure switch hose

When, after an external examination, no defects were detected, a multimeter will have to be used for further diagnosis of the sensor. Put the device into resistance mode, connect the tester probes with the contacts of the pressure switch. If the value on the multimeter screen after the procedure changes, it means that the contacts work fine, if the resistance value remains the same - the relay must be replaced.

Adjust detail

In some cases, the replacement of the pressure switch can be avoided if it is correctly adjusted and adjusted. To make the adjustment, you must have information about the amount of water that the Indesit machine needs to complete the washing program. Depending on their number, 1 to 3 screws are located on the relay.

In accordance with the amount of fluid required for each mode, these screws are tightened. If you correctly configure the level sensor, you can not spend money on the purchase of a new element.

It’s not easy to find the exact coordinates of the settings, so this type of work is usually carried out by professionals.

Circuit for adjusting the pressure switch

Change the level sensor

You can replace a non-functioning pressostat with a new one yourself, without resorting to the help of masters. The first task will be to purchase a part similar to a failed relay. For the seller to choose the right item, just name the exact model of your washer, but you can grab a non-working level sensor with you in the store.

After the pressure switch is purchased, you can begin to replace. It is necessary to remove the level sensor that has lost operability.

  1. Disconnect all hoses and contacts leading to the part (be sure to photograph the wiring diagram).
  2. Remove the screws that secure the pressure switch to the SMA housing.
  3. Remove the appliance.

As you can see, the work is not difficult. To install a new fluid level switch, perform all the steps described again, but in reverse order. Using the mounting bolts, install a new sensor, attach the pressure hose, and secure the clamp. Then you need to connect all the contacts and wires. After - install the cover of the machine body in place. Having completed all the basic steps to replace the pressure switch, you can start the Indesit washing machine and check its performance.

   

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